alfresco-ng2-components/lib/core/card-view/card-view-dateitem.component.scss

@mixin adf-card-view-dateitem-theme($theme) {

    .adf {
        &-invisible-date-input {
            height: 24px;
            width: 0;
            overflow: hidden;
            opacity: 0;
            border: none;
            margin: 0;
            padding: 0;
            display: none;
        }

        &-dateitem-editable {
            cursor: pointer;

            button.mat-icon-button {
                line-height: 20px;
                height: 20px;
                width: 20px;
            }

            mat-icon {
                width: 16px;
                height: 16px;
                opacity: 0.5;
                margin-left: 4px;
            }

            &:hover mat-icon {
                opacity: 1;
            }
        }
    }
}